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TypeScriptとGraphQLで実現する 型安全なAPI実装 / TSKaigi 2024
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Kazuhito Hokamura
May 11, 2024
Programming
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4.4k
TypeScriptとGraphQLで実現する 型安全なAPI実装 / TSKaigi 2024
Kazuhito Hokamura
May 11, 2024
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Transcript
2024/5/11 TSKaigi @hokaccha TypeScriptͱGraphQLͰ࣮ݱ͢Δ ܕ҆શͳAPI࣮
Ubie, Inc @hokaccha @hokaccha Kazuhito Hokamura
ࠓͷ༰ͪ͜ΒͰಡΊ·͢ Ubie ςοΫϒϩά
ͳͥAPIʹܕΛ͚͍ͭͨͷ͔
Α͋͘Δ API ϦΫΤετͷίʔυ
any ͔ΒͷܕΩϟετͱɺفΓ 🙇҆શفئ🙏
فΓ͕௨͡ͳ͍ͱͷإΑΓݟͨͭ
֎෦I/Oʹର͢Δܕ͚͕ෆेͩͱ ੩తܕ͚ͷԸܙΛे׆͔ͤͳ͍
API ʹܕΛ͚ͭΔ #ͱ 1. API ͷ༷ΛεΩʔϚͰఆٛ͢Δ 2. εΩʔϚ͔Β࣮ݴޠͷܕΛੜ͢Δ 3. ੜ͞ΕͨܕΛ࣮ͬͯ͢Δ
• ΫϥΠΞϯτͷ࣮ • αʔόʔͷ࣮
API ʹܕΛ͚ͭΔٕज़ • OpenAPI • gRPC • GraphQL ࠓ͜Ε
GraphQLͷεΩʔϚఆٛ schema.graphq
εΩʔϚ͔ΒܕΛੜ schema.graphq generated.ts
ੜͨ͠ܕΛ࣮ͬͯ͢Δ client.ts server.ts ˞ίʔυΠϝʔδ
GraphQL Codegen
ΫϥΠΞϯταΠυ
GraphQL Codegen Client Preset
codegen.ts
🙅 εΩʔϚ͔Βੜͨ͠ܕΛ͏ 🙆 ΫΤϦ͔Βੜͨ͠ܕΛ͏
εΩʔϚ͔Βੜͨ͠ܕΛ͏ εΩʔϚ ੜ͞Εͨܕ ΫϥΠΞϯτ࣮
εΩʔϚ͔Βੜͨ͠ܕΛ͏ εΩʔϚ ੜ͞Εͨܕ ΫϥΠΞϯτ࣮ JNBHF6SM͕ܕʹ͋Δ͚ͲϨεϙϯεʹͳ͍
εΩʔϚ͔Βੜͨ͠ܕΛ͏ εΩʔϚ ੜ͞Εͨܕ ΫϥΠΞϯτ࣮ JNBHF6SM͕ܕʹ͋Δ͚ͲϨεϙϯεʹͳ͍
ΫΤϦ͔Βੜͨ͠ܕΛ͏
ΫΤϦจࣈྻ͔Β (SBQI2-$PEFHFO͕ܕΛੜ͢Δ
͜ͷΛ(SBQI2-ͷΫϥΠΞϯτʹ͢ͱ ΫΤϦͷ݁Ռʹਖ਼͘͠ܕ͕ͭ͘
ೖྗΫΤϦ͔Β࡞ΒΕͨ ܕͰܕݕ͕ࠪޮ͘
TypedDocumentNode • GraphQL Codegen͕ੜ͢ΔΫΤϦͷܕ͖AST • ରԠ͢ΔΫϥΠΞϯτʹ৯ΘͤΔͱܕ͕͘ • ϝδϟʔͲ͜ΖͷΫϥΠΞϯτରԠ͍ͯ͠Δ • Apollo
Client • urql • graphql-request ͜Ε
Fragment Masking
ͷલʹFragment Colocation
None
ը૾Λදࣔ͠ͳ͍Α͏ʹมߋ
ফ͠Εͯ ؾ͚ͳ͍
ଞͷΫΤϦͰࢀর͞ΕͯΔ͔
ͯ͢ͷࢠ͕ඞཁͱ͢ΔσʔλΛτοϓϨϕϧͷ ΫΤϦ͕͍ͬͯΔඞཁ͕͋Δͱ͍͏ઃܭͷ
None
None
͜ͷ'SBHNFOUఆ͔ٛΒܕΛੜ
ੜ͞Εͨܕ
Fragment Colocation • FragmentΛίϯϙʔωϯτͱಉ͡ॴʹஔ͘ • ίϯϙʔωϯτ͕ࣗؔ৺ͷ͋ΔϑΟʔϧυ͚ͩཧ͢ΕΑ͍ • ͷࢠͷFragment͚ͩΛ͍ͬͯΕΑ͍
Fragment Masking
None
͜͜Ͱ͔͠OBNFΛࢦఆͯ͠ͳ͍
͜͜ͰࢀরͰ͖ͯ͠·͏
࣮͜ΕܕΤϥʔʹͳΔ
͜Μͳײ͡ʹܕΛมߋ
͜ͷؔΛ௨͞ͳ͍ͱ'SBHNFOUͷ σʔλΛࢀরͰ͖ͳ͍
Fragment Masking • FragmentΛఆٛͨ͠ίϯϙʔωϯτҎ֎͔ΒFragmentͷσʔλʹ ΞΫηεͰ͖ͳ͍Α͏ʹ͢Δ • ͜ΕʹΑͬͯFragment Colocation͕ڧ੍ͤ͞Δ • ܕ͕ෳࡶʹͳΔͱ͍͏σϝϦοτ͋Δ
αʔόʔαΠυ
GraphQL Codegen TypeScript Resolvers
GraphQL Codegen TypeScript Resolvers 4FSWFS1SFTFUบ͕ڧΊ
ϝδϟʔͳϥΠϒϥϦʹରԠ • graphql-js • ͜Ε͕શͯͷϕʔε • Apollo Server • GraphQL
Yoga
NestJS͚ͩগ͠ಛघ Ubie ςοΫϒϩά
schema.graphql
resolvers.ts model.ts
resolvers.ts model.ts %#͔ΒҾ͍ͯNPEFMͷܕΛฦ͢
codegen.ts
None
ܕ͕͍ͭͯΑ͔ͬͨʂʂ ͱ͍͔ͳ͍
None
DPNQBOZΛؚ·ͳ͍
DPNQBOZͷऔಘ͕ແବ
None
DPNQBOZ͕ΫΤϦʹؚ·ΕΔͱ͖͚࣮ͩߦ͞ΕΔ
None
None
codegen.ts 3FTPMWFSͰѻ͏ܕΛมߋͰ͖Δ
None
·ͱΊ
·ͱΊ • APIͷ࣮ʹܕΛ͚ͭͯفΓ͔Β։์͞ΕΑ͏ʂ • GraphQL CodegenͰΫϥΠΞϯτɾαʔόʔͷ࣮ʹܕΛ͚ͭΒΕΔʂ • ಋೖίετͦΕͳΓʹ͔͔Δ͚ͲϝϦοτѹతʹେ͖͍ͧʂ
͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ